Cool Wave - Testing temperature sensors for use with the Seeeduino XIAO

RE: Cool Wave - Testing temperature sensors for use with the Seeeduino XIAO

ntewinkel — Mon, 06 Nov 2023 23:20:19 GMT

Great overview of temperature sensors.

Good point about the MicroPython limitations - I didn't even stop to think that this might be an issue. I've been planning to move more to MicroPython, but it might not be a simple thing to do [emoticon:5ce50ea3f9eb49809e861e8733750338]

You might also like the BME280 (temp+humidity+pressure) or BMP280 (temp+pressure). They are quite affordable too, and easy to use in Arduino - Adafruit has boards, examples, and libraries. I don't know how well supported they would be for MicroPython. I did find I had to reset the power to them under certain conditions for long-term use, so I power it via a GPIO pin and give it a reboot if it fails to come online for the regular temperature/humidity updates my sensor does.

RE: Cool Wave - Testing temperature sensors for use with the Seeeduino XIAO

shabaz — Fri, 06 Oct 2023 21:15:32 GMT

Having successfully avoided ever needing to use 1-Wire, my luck ran out, and I will need to use it this weekend, because I need to pull out some data from 1-Wire memory.

I'm using C++, and a microcontroller that does not have a 1-Wire peripheral integrated, so I decided to write a custom library for it, since the existing ones did not look suitable (or looked unreliable).

Now I realize why there's a good chance MicroPython code may not work if just ported across. The timings need to be fairly accurate! It really does need measurement to confirm things since the usec-level timing may not be super-accurate with MicroPython.

RE: Cool Wave - Testing temperature sensors for use with the Seeeduino XIAO

DAB — Tue, 03 Oct 2023 20:53:47 GMT

Nice rundown of temperature sensors.

RE: Cool Wave - Testing temperature sensors for use with the Seeeduino XIAO

javagoza — Mon, 02 Oct 2023 07:43:01 GMT

Thanks! Lot of useful information about temperature sensors.

A while ago, just for exercise, I implemented a small library for one wire that read the data from the DHT11, it is a very simple protocol in which you can use a simple strategy and busy-wait with bit-banging, it may not be the most suitable for all cases, but it works. I developed the library for Arduino but I think the idea is easily adaptable to micropython.

DHT11 Arduino Library and ThingSpeak - Hackster.io

RE: Cool Wave - Testing temperature sensors for use with the Seeeduino XIAO

dougw — Sun, 01 Oct 2023 19:50:11 GMT

Thanks for posting your findings.